MESON Chess Problem Database

Problem Display
PID: 160924 (4Rbb1/2p5/N1P5/3kPnpQ/BR5p/K1BP3q/2N5/2n5 w - - 0 1)

Albrecht, Hermann

Revista Romana de Sah, 1948

4Rbb1/2p5/N1P5/3kPnpQ/BR5p/K1BP3q/2N5/2n5

#2

11 + 9

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Qf3#
    • 1...Qf3
      • 2.Qxf3#
    • 1...Bxb4+
      • 2.Scxb4#
    • 1...Bc5
      • 2.Sxc7#
    • 1...Bf7
      • 2.Qxf7#
    • 1...Bh7
      • 2.Qf7#
    • 1...Sg3
      • 2.Se3#
    • 1...Sd6
      • 2.Rd4#
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qxg8#
      • 1...Bxb4+
        • 2.Scxb4#
      • 1...Bg7
        • 2.Rb5#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bf7
        • 2.Qxf7#
      • 1...Bh7
        • 2.Qf7#
        • 2.Qe6#
      • 1...Se3
        • 2.Qe4#
      • 1...Sg3
        • 2.Se3#
      • 1...Sd4
        • 2.Qe4#
      • 1...Sd6
        • 2.Rd4#
      • 1...Sh6
        • 2.Qe4#
      • 1...Se7
        • 2.Rb5#
      • 1...Sg7
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • Q(b);N_GUARD::QAB(H)
    • Q(b);N_GUARD::QAB(H),XQ(b)
    • B(h);CHECK,XR(F)::S(A),XB(h)
    • B(h);SBLOCK::S(I),XP(g)
    • B(i);N_GUARD::QAB(H),XB(i)
    • B(i);N_GUARD::QAB(H)
    • S(e);N_GUARD,S_CUTQ(b)::S(A)
    • S(e);N_PINR(F)::R1(F)
  • Actual
    • Q(H);
    • Threat
      • QAB(H),XB(i)
    • Vars
      • B(h);CHECK,XR(F)::S(A),XB(h)
      • B(h);N_PINR(F)::R(F)
      • B(i);N_GUARD::QAB1(H),XB(i)
      • B(i);N_GUARD::QAB(H),XB(i)
      • S(e);OGATE::QAB1(H)
      • S(e);N_GUARD,S_CUTQ(b)::S(A)
      • S(e);N_PINR(F)::R1(F)
      • S(e);N_PINR(F)::R(F)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).